You could use the early f100 switches. They are used on the 1961-66 trucks. Also the 1967's a one year only. The length is a little different but should work.
Thanks. I'm using a 68 bronco wiper switch but I think any 2 speed switch would work. I'd never been in a older f100 so I didn't think of that. While I have every inch of wire off the van, nows the time to replace everything.
I took my switch apart and cleaned it up. It works just fine now. Just bend the little tangs back and carefully remove the insides. Watch how it comes apart and clean every thing inside. Then put it back together the way it was and bend the tangs over. It took me about 20 - 30 minutes.
Thanks Dan, While I am rewiring the entire van, I'm replacing every switch whether it's good or not. I found a solution to the 67 only dual speed wiper switch too.